Genesis 21:30-32

Young's Literal Translation

³⁰ And he saith, `For -- the seven lambs thou dost accept from my hand, so that it becometh a witness for me that I have digged this well;'

³¹ therefore hath he called that place `Beer-Sheba,' for there have both of them sworn.

³² And they make a covenant in Beer-Sheba, and Abimelech riseth -- Phichol also, head of his host -- and they turn back unto the land of the Philistines;